Brocade Converged Enhanced Ethernet Administrator's Guide v6.1.2_cee (53-1001258-01, June 2009)

Table Of Contents
52 Converged Enhanced Ethernet Administrator’s Guide
53-1001258-01
STP, RSTP, and MSTP configuration procedures
4
MSTP-specific configuration procedures
In this section:
Enabling or disabling Cisco interoperability. . . . . . . . . . . . . . . . . . . . . . . . . . 52
Mapping a VLAN to an MSTP instance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Specifying the maximum number of hops for a BPDU . . . . . . . . . . . . . . . . . 53
Specifying a name for an MSTP region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Specifying a revision number for an MSTP configuration . . . . . . . . . . . . . . . 54
Enabling or disabling Cisco interoperability
In MSTP mode, use this command to enable or disable the ability of the Brocade 8000 CEE switch
to interoperate with certain legacy Cisco switches. If Cisco interoperability is required on any switch
in the network, then all switches in the network must be compatible, and therefore enabled using
this command.
NOTE
This command is necessary because theversion 3 length field in the MSTP BPDU on some legacy
Cisco switches does not conform to the current standards.
To enable or disable the ability of the Brocade 8000 CEE switch to interoperate with certain legacy
Cisco switches, perform the following steps from Privileged EXEC mode:
Step Task Command
1. Enter global configuration mode. switch>#config t
Enter configuration commands, one per
line. End with CNTL/Z.
switch(config)#
2. Enter MSTP mode. switch(config)#protocol spanning-tree
mstp
switch(conf-mstp)#
3. Enable the ability of the Brocade 8000 CEE
switch to interoperate with certain legacy
Cisco switches. The default is Cisco
interoperability is disabled.
switch(conf-mstp)#cisco-interoperability
enable
Disable the ability of the Brocade 8000 CEE
switch to interoperate with certain legacy
Cisco switches.
switch(conf-mstp)#cisco-interoperability
disable
4. Display the spanning-tree configuration. switch(conf-stp)#do show spanning-tree